DeWine's office says Ohio officials have tested more than half of those rape kits. That has led to about 1,600 DNA matches in a criminal database. DeWine says that as DNA matches are found, the information is returned to local law enforcement to pursue charges.

The DNA testing has led to 170 indictments in Cuyahoga (ky-uh-HOH'-guh) County alone.

The testing initiative was first announced in December 2011. It offered free DNA testing to law enforcement agencies with untested rape kits in which a crime was believed to have been committed. A total of 141 law enforcement agencies have submitted untested rape kits.